The bank said it aims to fully restore the system after a three-day weekend that runs through the Vernal Equinox Day holiday on Monday, but it remains unclear whether operations will return to normal on Tuesday.

After making the steep, slippery and often spray-drenched climb along the aptly named Mist Trail to 317-foot-tall Vernal Fall, the trio crossed a metal guardrail placed to keep visitors away from the swift-moving water and were seen entering the water approximately 25 feet from the precipice, National Park Service spokesman Scott Gediman said.